reactive
adjective
1. participating readily in reactions
- sodium is a reactive metal
- free radicals are very reactive
Similar word(s): activated, excited, labile, oxidizable, thermolabile, unstable
2. reacting to a stimulus
- the skin of old persons is less reactive than that of younger persons
Similar word(s): sensitive, responsive
3. reacting to the past rather than anticipating the future, not predictive.
4. (chemistry) that readily takes part in reactions.
Sentences with reactive as an adjective:
- francium is the most reactive of the alkali metals.